योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-116, verse-7

राजसूयक्रियाकर्तुस्तस्य दत्त्वा महापदम् ।
अगच्छत्स नभोमार्गं सुरसिद्धनिषेवितम् ॥ ७ ॥

rājasūyakriyākartustasya dattvā mahāpadam ,
agacchatsa nabhomārgaṃ surasiddhaniṣevitam 7

7. rājasūyakriyākartuḥ tasya dattvā mahāpadam
agacchat saḥ nabhomārgam surasiddhaniṣevitam

7. dattvā tasya rājasūyakriyākartuḥ mahāpadam
saḥ surasiddhaniṣevitam nabhomārgam agacchat

7. Having inflicted a great calamity upon him, the performer of the Rajasuya (sacrifice), he (the divine messenger) departed along the celestial path, which is frequented by gods and perfected beings (siddhas).

Words meanings summery:

• राजसूयक्रियाकर्तुः (rājasūyakriyākartuḥ) - to the performer of the Rajasuya ritual/act

• तस्य (tasya) - to him, of him

• दत्त्वा (dattvā) - having given, having inflicted

• महापदम् (mahāpadam) - a great calamity, a dire situation

• अगच्छत् (agacchat) - he went

• सः (saḥ) - he

• नभोमार्गम् (nabhomārgam) - to the aerial path, celestial path

• सुरसिद्धनिषेवितम् (surasiddhaniṣevitam) - frequented by gods and siddhas (perfected beings)

Words meanings and morphology

राजसूयक्रियाकर्तुः (rājasūyakriyākartuḥ) - to the performer of the Rajasuya ritual/act

(noun)

Genitive, masculine, singular of rājasūyakriyākartṛ

rājasūyakriyākartṛ - performer of the Rajasuya sacrifice

Compound type : tatpurusha (rājasūya+kriyā+kartṛ)

• rājasūya – Rajasuya (sacrifice)
  noun (neuter)
• kriyā – act, ritual, action
  noun (feminine)
• kartṛ – doer, performer
  noun (masculine)
  Root: kṛ (class 8)

Note: Here, it functions as dative, 'to the performer'.

तस्य (tasya) - to him, of him

(pronoun)

Dative, masculine, singular of tad

tad - that, he (demonstrative/personal pronoun)

Note: Here, it functions as dative, 'to him'.

दत्त्वा (dattvā) - having given, having inflicted

(indeclinable)

Absolutive (Gerund)

Root: dā (class 3)

महापदम् (mahāpadam) - a great calamity, a dire situation

(noun)

Accusative, neuter, singular of mahāpada

mahāpada - great position/state, great calamity

Compound type : karmadharaya (mahā+pada)

• mahā – great, large
  adjective (neuter)
• pada – foot, step, place, state, calamity, downfall
  noun (neuter)

अगच्छत् (agacchat) - he went

(verb)

3rd person , singular, active, past imperfect (laṅ) of gam

Root: gam (class 1)

सः (saḥ) - he

(pronoun)

Nominative, masculine, singular of tad

tad - that, he (demonstrative/personal pronoun)

नभोमार्गम् (nabhomārgam) - to the aerial path, celestial path

(noun)

Accusative, masculine, singular of nabhomārga

nabhomārga - sky-path, aerial path, celestial route

Compound type : tatpurusha (nabhas+mārga)

• nabhas – sky, atmosphere
  noun (neuter)
• mārga – path, road, way
  noun (masculine)

सुरसिद्धनिषेवितम् (surasiddhaniṣevitam) - frequented by gods and siddhas (perfected beings)

(adjective)

Accusative, masculine, singular of surasiddhaniṣevita

surasiddhaniṣevita - frequented or served by gods and siddhas

Past Passive Participle

Compound type : tatpurusha (sura+siddha+niṣevita)

• sura – god, deity
  noun (masculine)
• siddha – perfected being, adept
  noun (masculine)
• niṣevita – frequented, served, resorted to
  adjective (masculine)
  Past Passive Participle
  Derived from the root 'sev' (to serve, frequent) with the prefix 'ni'.
  Prefix: ni
  Root: sev (class 1)